1,236,020

2² × 5 × 23 × 2687

Starting at 1,236,020, the Collatz iteration reaches 1 after 111 steps. The first transition is 618010; the starting value is even with 24 positive divisors.

Prime Factor Structure

Factorization String 2^2 × 5 × 23 × 2687

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 2,709,504

Proper Divisor Sum 1,473,484

Digit Sum / Digital Root 14 (Root: 5)

Adjacent Primes #1236017 ← → #1236073

Radix Representation

Decimal	1236020
Binary	100101101110000110100 (21 bits)
Octal	0o4556064
Hexadecimal	0x12DC34

Divisor Catalog (24)

1 2 4 5 10 20 23 46 92 115 230 460 2,687 5,374 10,748 13,435 26,870 53,740 61,801 123,602 247,204 309,005 618,010 1,236,020

Collatz Trajectory (111 steps to reach 1)

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

1,236,020 618,010 309,005 927,016 463,508 231,754 115,877 347,632 173,816 86,908 43,454 21,727 65,182 32,591 97,774 48,887 146,662 73,331 219,994 109,997 329,992 164,996 82,498 41,249 123,748 61,874 30,937 92,812 46,406 23,203 69,610 34,805 104,416 52,208 26,104 13,052 6,526 3,263 9,790 4,895 14,686 7,343 22,030 11,015 33,046 16,523 49,570 24,785 74,356 37,178 18,589 55,768 27,884 13,942 6,971 20,914 10,457 31,372 15,686 7,843

← Previous Integer #1,236,019 Browse Full Index Next Integer #1,236,021 →